Use FreeType for OpenType Variations on CoreText < 10.12

third_party/WebKit/Source/platform/fonts/FontPlatformData.cpp

 /*
  * Copyright (C) 2011 Brent Fulgham
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 149 matching lines @@
 }
 
 FontPlatformData::~FontPlatformData() {}
 
 #if OS(MACOSX)
 CTFontRef FontPlatformData::CtFont() const {
   return SkTypeface_GetCTFontRef(typeface_.get());
 };
 
 CGFontRef FontPlatformData::CgFont() const {
+  if (!CtFont())
+    return nullptr;
   return CTFontCopyGraphicsFont(CtFont(), 0);
 }
 #endif
 
 const FontPlatformData& FontPlatformData::operator=(
     const FontPlatformData& other) {
   // Check for self-assignment.
   if (this == &other)
     return *this;
 
@@ skipping 154 matching lines @@
   const size_t table_size = typeface_->getTableSize(tag);
   if (table_size) {
     Vector<char> table_buffer(table_size);
     typeface_->getTableData(tag, 0, table_size, &table_buffer[0]);
     buffer = SharedBuffer::AdoptVector(table_buffer);
   }
   return buffer.Release();
 }
 
 }  // namespace blink